I've sold but after the fees I found it not to be worth it unless you sell regularly or run a side business.

Depending on how many 360 games you have you may want to consider doing what I did. See how much you get for your games by searching under Amazon US trade and save program and take the money as an amazon credit instead. For some titles you get the credit right away as long as you ship the titles within 7 days & its in USD. I recently cashed in a bunch of old games, dvd's, cd's &books and scored almost $200 credit (175 instantly & 25 after they verified my items). Shipping is free to amazon via ups/usps if shipped within the US, you can also ship using US couriers such as chitchat, but not sure if they would charge even though you have the amazon labels.

If you're having trouble locating the US trade in link link, you can PM me the titles and I can search tell you what they are worth.
It also helps if you live near a US border crossing or frequent the US for work.
As far as I know Amazon Canada does not have any such program